debian-mirror-gitlab/app/services/merge_requests/squash_service.rb

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# frozen_string_literal: true
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module MergeRequests
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class SquashService < MergeRequests::BaseService
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SquashInProgressError = Class.new(RuntimeError)
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def execute
# If performing a squash would result in no change, then
# immediately return a success message without performing a squash
if merge_request.commits_count < 2 && message.nil?
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return success(squash_sha: merge_request.diff_head_sha)
end
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return error(s_('MergeRequests|This project does not allow squashing commits when merge requests are accepted.')) if squash_forbidden?
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if squash_in_progress?
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return error(s_('MergeRequests|Squash task canceled: another squash is already in progress.'))
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end
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squash! || error(s_('MergeRequests|Failed to squash. Should be done manually.'))
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rescue SquashInProgressError
error(s_('MergeRequests|An error occurred while checking whether another squash is in progress.'))
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end
private
def squash!
squash_sha = repository.squash(current_user, merge_request, message || merge_request.default_squash_commit_message)
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success(squash_sha: squash_sha)
rescue => e
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log_error(exception: e, message: 'Failed to squash merge request')
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false
end
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def squash_in_progress?
merge_request.squash_in_progress?
rescue => e
log_error(exception: e, message: 'Failed to check squash in progress')
raise SquashInProgressError, e.message
end
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def squash_forbidden?
target_project.squash_never?
end
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def repository
target_project.repository
end
def merge_request
params[:merge_request]
end
def message
params[:squash_commit_message].presence
end
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end
end